baber/WOPTO huggingface dataset:
Patent GB-1303915-A (GB)
IPC: B66F7/02
Filed: 1971-06-30
Abstract: 1303915 Vehicle lifting carriages HOFMANN GmbH Gebr [trading as HOFMANN KG Gebr] 30 June 1971 [28 Oct 1970] 30716/71 Heading B8H [Also in Division F2] A two-column lifting carriage (not shown) is operated by means of a rotating spindle 3 which engages a flange sleeve (15) in the lifting carriage, Fig. 4 (not shown), the spindle 3 passing through a stepped bore 1 in the lifting carriage in which a felt ring 2 is fitted, the ring 2 being held in position by means of a flanged sleeve 4 which defines with the lifting carriage a space 6 for containing lubricating oil, the sleeve 4 having holes 5 through which oil passes into the ring 2 so that on upward and downward movement of the lifting carriage the ring 2 lubricates the spindle 3.
Patent GB-172939-A (GB)
Title: Improvements in the high-voltage slot-windings of electrical machines and in the process for the manufacture of same
IPC: H02K3/34
Filed: 1921-11-17
Abstract: 172,939. Akt.-Ges. Brown, Boveri, et Cie. Dec. 16, 1920, [Convention date]. Insulation.-In a method of insulating hightension windings in half-closed slots, the slot, Fig. 1, is first lined with an insulating layer a, after which a lower U-shaped channel b is inserted. The former-wound coil c is introduced laterally wire by wire through the slot opening d, the layers being insulated from one another by strips g. A U-shaped channel e is next slipped over the coil in an axial direction, and a wedge f firmly supports the whole. In a modification, Fig. 2, the walls of the channels are wedgeshaped, there being thus a lateral pressure upon the coil. The abutting surfaces of the insulating members are made smooth, and are preferably covered with insulating varnish. If it is required to lengthen the surface leakage path for high voltages, the lower channel b may have double walls, the flanks of the upper channel being adapted to fit into the spaces between the walls. The slot wedge f may be dispensed with if the upper and lower channel members are pressed together inside the slot until the insulating varnish causes them to adhere.
Patent GB-1477703-A (GB)
Title: Heat exchanger
IPC: F28F21/04
Filed: 1974-07-11
Abstract: 1477703 Plate heat exchangers ADVANCED MATERIALS ENG Ltd 27 June 1975 [11 July 1974] 30782/74 Heading F4S A heat exchanger comprises a stack of substantially planar members 30 of ceramic material at least some which have ribs 34, 36 ... or 40, 42 ... projecting from at least one side and the ribs of some members differ in direction from those of other members. The stack may include plates having ribs on one, both or no sides and the upper and lower plates are ribbed on one side only. The ribs may project into spaces between the ribs of an adjacent member and boundary ribs 42, 50 are secured as by cementing to the closely adjacent rib 38, 60 of an adjacent plate. Two flows of gas are passed in cross current through the exchanger via ducts (not shown) sealed thereto by means which can accommodate thermal stresses. The ceramic material may be silicon nitride or silicon carbide
Patent GB-307849-A (GB)
IPC: F16F9/19
Abstract: 307,849. Soc. Anon. des Anciens Etablissements L. Laisne. Sept. 17, 1927, [Convention date]. Divided on 297,329. Fluid - friction vibration - dampers. - Motorvehicle dashpots comprise a hollow plunger 6 working in a cylinder 5 surrounded by an oiljacket 5<1>, the end of the plunger 6 being fitted with a one-way valve 6<1> which allows free return movement of the plunger towards the left bellcrank lever under the influence of a spring 6<2>, while oil is displaced during the outward or forcing movement of the plunger through a hole 5<00> fitted with a screw-adjusted regulating hollow needle valve 5<2>. Holes 5<0> and 6<00> in the cylinder and plunger respectively facilitate the flow of oil from the cylinder to the interior of the plunger until the holes 6<00> are covered by the plunger when the resistance to movement is increased. Oil may be supplied, when necessary, through a pipe connected to the hollow needle valve. The dashpots may be applied to vehicles of the kind in which each road-wheel is independently supported on a bell-crank lever 1 resiliently connected at its end 10 with a tubular chassis' member 4 by means of a helical spring 2. Co-operating hemispherical surfaces 7, 8<a> are formed on the cylinder 5 and on a fixed abutment 8 in the member 4 so as to permit the cylinder to follow the oscillatory movements of the vertical arm of the bellcrank lever. Specifications 218,686 and 267,977, [both in Class 108 (ii). Road vehicles, Undercarriage details &c. for], are referred to.
Patent GB-299705-A (GB)
Title: Improvements in or relating to recording devices
IPC: G01R13/00
Filed: 1928-10-24
Abstract: 299,705. Soc. des Usines Chimiques Rhone-Poulenc, (Assignees of Etablissements Poulenc FrÞres, and Chagnaud, A.). Oct. 29, 1927, [Convention date]. Relay devices.-A recording device for use with a measuring instrument is provided with a marking member mounted independently of the in dicating pointer and has means for periodically arresting the pointer whereupon operating members are adapted to be displaced to move the marker in accordance with the setting of the pointer. A3 shown in Figs. 1, 2, and 3, the indicating pointer 1 carries at its extremity a small plate 2 with a vertical pin 3 and arranged above the pointer is a U-shaped bar 6 pivoted on a shaft 7 and adapted to be oscillated periodically by a spring 8 and cam 9 to arrest the pointer. When the pointer is stationary two arms 14, 15 pivoted about an axis coincident with that of the pointer and under the control of springs 19 and cams 20, only one set of which is shown, are operated to cause a marking member carried by a slide 10 to move along a bar 11 until one or other of the bars 14, 15 is arrested by the pin 3. The pointer is preferably not released until the bars 14, 15 have been returned to their outer positions as shown in Fig. 3. The movement of the record strip may also be regulated by the means controlling the operation of the bars 6, 14, and 15.
Patent GB-923310-A (GB)
Title: Improvements in and relating to gas blast polyphase circuit breakers
Inventor: ROXBURGH ALBERT
IPC: H01H9/56
Filed: 1958-09-26
Abstract: 923,310. Gas-blast circuit-breakers. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Aug. 27, 1959 [Sept. 26, 1958; Nov. 10, 1958], Nos. 30917/58 and 36051/58. Class 38 (5). A control arrangement for a polyphase gas-blast circuit-breaker comprises a manual switch T.C. effective to render operable a discharge device 1 which under the control of the voltage or current in a phase causes the opening of a blast valve associated with that phase, means being provided to effect the opening of the other blast valves with successive time delays so that the phases are interrupted successively at the corresponding instant of the A.C. cycle in the respective phases. In Fig. 1, a thyratron 1 becomes conductive when the switch T.C. is closed and the voltage applied to its grid 10 from a current or voltage transformer 22 reaches a value sufficient for the thyratron to fire. This energizes a relay 7 to cause the opening of the blast valve (not shown) associated with the same phase as the transformer 22. The successive operation of the other blast valves may be effected by providing a similar arrangement of transformer, thyratron and relay for each other phase as shown. Alternatively, the relay 7 in addition to controlling the associated blast valve may also control time-delay relays which control the blast valves associated with the other phases, Fig. 2 (not shown). An ignition may be used in place of the, or each, thyratron.
Patent GB-843507-A (GB)
Title: Improvements in or relating to band brake actuating mechanism for epicyclic gearboxes
Inventor: SIMPSON CYRIL MAURICE
IPC: F16D49/12
Filed: 1957-10-03
Abstract: 843,507. Change-speed control. BIRMING- HAM SMALL ARMS CO. Ltd. Sept. 29, 1958 [Oct. 3, 1957], No. 30921/57. Drawings to Specification. Class 80 (2). [Also in Group XXXIV] A compact construction of an epicyclic gear providing four forward speeds and reverse by the operation of band brakes, is obtained by arranging actuating mechanisms for one forward and the reverse band on the opposite side of the gear axis to those for the remaining forward bands. This is rendered possible by using for each of the forward bands the band brake described in Specification 777,726, which has substantially equal braking power in both directions of torque application. Preferably the reverse band is of ordinary form. Specification 220,021 is referred to in the Provisional Specification.
Patent GB-646582-A (GB)
Title: Improvements in or relating to clothes washing machines
IPC: D06F37/22
Filed: 1947-11-21
Abstract: 646,582. Washing and drying machines. BENDIX HOME APPLIANCES, Inc. Nov. 21, 1947, No. 30966. Convention date, May 1, 1946. [Class 138 (ii)] [Also in Groups II and XXXII] In a clothes washing and drying machine a tub 20 contains a cylinder 21 mounted for rotation on a substantially horizontal axis, the tub is supported from a frame by a plurality of resilient means 16, 18 and vibrations are damped by coacting means 30, 31 interposed between the frame and tub which are capable of building up to a definite resistance to movement and are positioned to apply damping force in both horizontal and vertical directions substantially through the axis of rotation of the cylinder. The resilient means comprises four springs, two of which, 16 and 18, are shown. These springs are arranged at small angles to the vertical in both front and side views. Hydraulic dampers (see Group XXXII) 30, 31 are connected to the bottom of the tub and to the casing of the machine. These dampers are arranged so that lines passing through their longitudinal axis pass through the probable centre of weight of the clothes receptacle when it has a load of clothing. A driving motor 25 and two-speed gear-box 26 are attached to the base of the tub 20 and to balance these and to make the axis of rotation of the clothes receptacle substantially coincide with the centre of weight, weights 35, 36 are mounted on top of the tub. Specification 514,887 is referred to.
Patent GB-963443-A (GB)
Title: Improvements in or relating to bearing sleeves and assemblies
Inventor: MACINNES HUGH
IPC: F01D25/16
Filed: 1961-08-29
Abstract: 963,443. Turbines; gas turbine plant. THOMPSON RAMO WOOLDRIDGE Inc. Aug. 29, 1961, No. 31093/61. Headings FIG and FIT. [Also in Division F2] In a fluid bearing for a high-speed turbine driven compressor shaft, the shaft 16 is supported by fluid-pressure in a sleeve 41 and the sleeve 41 is supported by fluid-pressure in a housing 11. A turbine driven compressor assembly comprises a compressor section 9, a turbine section 10 with a shaft-housing 11 therebetween. The housing 11 has a lubricating-oil inlet 36, branch passages 37, 38 and annular recesses 39, 40 therein and is bored to receive the sleeve 41 freely therein. The recesses 39, 40 communicate with a number of apertures 46, 47 in the sleeve 41 so as to provide pressurised oil between the shaft 16 and the sleeve 41. The sleeve 41 has a flange 42 having an annular recess 43 and V- shaped recesses 44, 45 to allow discharge of oil from the clearances between the housing 11 and the sleeve 41 and between the sleeve 41 and the shaft 16. One of the apertures 48 communicates with a passage 50 in the housing, and an annular passage 55 is provided therein; the passages 50 and 55 are connected to a discharge outlet 54. The sleeve 41 is prevented from rotating by a spring-pin 53 which is received by a bore 52 in the flange 42. In operation, pressurised oil is supplied to the inlet 36 and enters the clearances S1, S2, Fig. 2, via passages 37, 38, 40, 46 and 47 and leaves the clearances S1, S2, via passages 55, 56 and 54. Clearance is also provided between end of the sleeve 41 and an extension of the impeller 35 and between the flange 42 and a retaining-ring 58. Thus the pressurized oil also resists thrust. In a modification, the inlet 36, Fig. 4, connects with an annular groove 60 in the housing 11, and apertures 61 in the sleeve 41 supply oil to the clearance between the sleeve and the shaft. Axial grooves 63, Figs 5 and 6, are provided in the sleeve 41 to facilitate oil flow and to collect foreign matter.
Patent GB-1181129-A (GB)
Title: Apparatus for Dielectric Heating
IPC: H05B6/78
Filed: 1967-07-06
Abstract: 1,181,129. Microwave heating. CANADIAN PATENTS & DEVELOPMENT Ltd. 6 July, 1967 [7 July, 1966], No. 31130/67. Heading H5M. [Also in Division F4] A dielectric heating apparatus, e.g. for drying webs, comprises a rectangular waveguide 13 along which a travelling wave is propagated and through which a web 12 is moved in a direction parallel to the wave propagation, the operating mode of the wave being the TE 01  mode and producing a concentration of electric field in the portion of the waveguide occupied by the web which extends parallel rather than perpendicular to the web. The microwave energy is fed in from perpendicular or inclined side arms 14. In another embodiment the energy is fed directly into one end of the waveguide and the web enters through a transverse slot in the bottom of the guide. The waveguides are terminated by absorbing wedges to prevent standing waves. In another embodiment energy is fed in step by step to the waveguide from a superimposed slotted waveguide (Figs. 4 and 5, not shown). In Fig. 7 (not shown), the energy is fed into the waveguide from a transverse waveguide with oppositely inclined slots. The web may travel in either direction along the waveguide although it is preferred that it travels in the direction of wave propagation.
Patent GB-327192-A (GB)
Title: Improvements relating to spring surfaces for mattresses, beds, sofas, seat and chairbottoms and the like
IPC: A47C23/06
Filed: 1929-07-25
Abstract: 327,192. Finlay, R. H. F. July 25, 1929. Spring surfaces for seats and mattresses are built up of closely-spaced independent laths a arranged transversely and supported at their ends by compression springs b on the mattress-frame. For a double bed two such sets of laths may be used with their inner ends supported by a longitudinal bar c<1>. Specifications 13522/88, 9597/91, 22695/98, 9281/09 and 320,890 are referred to.
Patent GB-498218-A (GB)
Title: Improvements in loud speakers
IPC: H04R9/06
Filed: 1937-11-15
Abstract: 498,218. Loud-speakers. CINAUDAGRAPH CORPORATION. Nov. 15, 1937, No. 31313. Convention date, Nov. 14, 1936. [Class 40 (iv)] A loud-speaker comprises a chassis unit connected with the periphery of a vibratory diaphragm carrying a voice-coil, centring means which connect the inner portion of the chassis with the diaphragm and hold the voicecoil accurately centred with respect to a magnet-engaging device or devices on the chassis, and a magnet unit having an air-gap for the voice-coil and a chassis-engaging device or devices at or near its periphery accurately centred with respect to the air gap and cooperating with the engaging device or devices of the chassis-unit to connect the chassis unit and magnet unit in such a manner that when the loud-speaker is assembled, the voice-coil is accurately centred in the air gap. The chassis 1 is formed with a flange 30 forming a seating for the peripheral flange 7 of the diaphragm 2 and a shoulder 10 to which the outer part of a centring member 4, constituted by a corrugated stiffened gauze-like fabric is cemented. In addition, the chassis 1 has a flange 17 accurately fitting the outer surface of a former or mandrel 20, Fig. 2, corresponding to the outer surface of the outer pole-plate 14, Fig. 1. When the chassis unit is mounted on the mandrel so that the voice-coil cylinder 8 fits on the core member 21 and any relative movement between the diaphragm 2, the chassis 1 and the centring device has taken place, the diaphragm is cemented to the flange 30 and to the centring device 4. The diaphragm is held firmly against its seating and against the centring device during the setting period of the cement by a ring 23, and the centring device is supported by an annular ring 22 on the mandrel 20. The chassis unit is clamped to the magnet unit 5 by a flanged ring 19 clamped by a fastening passing through flanges 6. In a modified construction and mode of assembly, the chassis unit is placed on an anvil member provided with locating pins which engage holes in the chassis and with a central shouldered member on which the voicecoil fits accurately, the chassis unit being lowered relative to the anvil so that the peripheral portion of the diaphragm takes up a free and unstrained portion relative to the chassis, Fig. 3 (not shown). After the diaphragm has been cemented to the chassis, the centring member is cemented to the diaphragm and chassis when the latter is placed on a former having a central projection forming a close fit for the voice-coil cylinder and provided with locating pins corresponding accurately to those on the anvil member, Fig. 4 (not shown). The chassis unit 35, including the diaphragm C<1> and centring member 48, is then mounted on the outer poleplate by means of the dowel pins 54, and the assembly of the loud-speaker is completed by bolts 55 which pass through slightly oversize holes in the chassis 35. A felt ring 46 is interposed between the peripheral flange of the diaphragm C<1> and the chassis 35 and a felt mounting ring 60 is cemented to the upper surface of the flange 37.
Patent GB-685970-A (GB)
Title: Carbodiimides
Filed: 1950-12-27
Abstract: Carbodiimides are prepared by treating thioureas of general formula <FORM:0685970/IV (b)/1> in which R and R1 are alkyl or cycloalkyl radicals, with an aqueous alkaline solution of an alkali hypohalite. The reaction is carried out at temperatures below 35 DEG  C. and preferably below 10 DEG  C.  The substituted thiourea may be dissolved in organic solvents, the carbodiimide formed passing into the solvent layer from which it can be separated by distillation. The process <PICT:0685970/IV (b)/1> may be carried out continuously. In the Figure the solution of a substituted thiourea in an organic solvent heavier than water is sprayed through 1 into a vertical tube 2 in counter-current to the hypohalite solution entering at 3.  The carbodiimide formed collects as a solution and is discharged through 4 into a vessel p  5.  The hypohalite solution leaves at 6.  The solution of carbodiimide is led into a fractionating column 7 in which the solvent is distilled off and is recovered and returned to the cycle.  The carbodiimide is passed into a vacuum fractionating column 8 for further purification.  In the examples: (a) N,N1-diisopropyl-thiourea is reacted with sodium hypochlorite solution to give diisopropyl-carbodiimide; (b) N,N1-dicyclohexylthiourea is reacted with sodium hypobromite solution to give dicyclohexyl-carbodiimide; and (c) N-methyl-N1-tertiary-butylthiourea is reacted with sodium hypochlorite solution to give methyl-tertiary-butyl-carbodiimide.
Patent GB-1423639-A (GB)
Title: Rolling mill for shaping bars
IPC: B21H7/00
Filed: 1974-07-17
Abstract: 1423639 Rolling mills R P KRAUSE 17 July 1974 31627/74 Heading B3M A mill for tapering bars includes a housing through which extend longitudinal guide beams 21 on which two carriages are fed; a work carriage 25 supporting a heated bar on an anvil 30, and a roll carriage 7 supporting rolls 8 and 9, the upper roll 8 of which co-operates with a fixed template 16 in the housing to taper the upper surface of the bar. From the position shown (Fig. 2), the carriage 25 is moved to the right until the middle of the bar is between the rolls, the carriage 7 then being moved with the work carriage. The lower roll 9 transmits rolling forces from the bottom of the carriage 25 to a fixed base 5 of the housing during rolling. As the upper roll 8 is forced to approach the bar by the template 16, tapering takes place from the centre of the bar towards its left hand end, the roll carriage 7 now moving more slowly than the work carriage.  When one half of the bar has been tapered, the template 16 is moved laterally in the stand by a ram 46 (Fig. 3) and a further template 36 (tapering in the opposite sense) placed in position. Reverse movement of the carriages then tapers the right hand half of the bar. The templates are held in place by tapered dovetail connections and are longitudinally movable to adjust their vertical positions.
Patent GB-321806-A (GB)
Title: Loud speaker and like acoustic apparatus
IPC: H04R7/20
Filed: 1928-10-31
Abstract: 321,806. French, C. Oct. 31, 1928. Diaphragms.-The conical or dish-shaped diaphragm of a loud-speaker is suspended by one or more spiral springs attached at one end to the diaphragm and at the other end to a fixed part of the instrument. The diaphragm 1 has two springs 4, 5 attached to the diaphragm in a plane substantially through its centre of gravity, the other ends of the springs being attached to the casing. The springs, which may be made of parchment, stiff paper, light metal, &c., are of rectangular cross-section and are bent at the ends as at 6, 7, Fig. 2, so as to give greater axial than radial freedom. The ends 10 are slotted to enable adjustment of tension. If the convolutions run in opposite directions, the springs are arranged to be equi-distant from the plane containing the centre of gravity of the diaphragm.
Patent GB-1352754-A (GB)
Title: Composite plastic bearing and method and apparatus for making the same
IPC: F16C33/26
Filed: 1971-07-06
Abstract: 1352754 Making bearings by winding TEXTRON Inc 6 July 1971 [1 Dec 1970] 31697/71 Heading B8G [Also in Division F2] A filament winding machine for manufacturing fabric lined bearing elements comprises a frame, a rotatable mandrel 22 sheathed in a lowfriction liner 11, filament-supply means 24, a carriage slidable in the frame and carrying either the mandrel or the filament supply means, the axis of the mandrel being substantially parallel to the direction in which the carriage is guided. Traverse feed means are provided for the carriage including gear means which relate the angular displacement of the mandrel with the traverse displacement of the carriage, the gear means having a plurality of selectable gear ratios. The filament supply means includes guide means 26 which group and pay out to a localized part of the periphery of the mandrel an array of closely longitudinally spaced filaments, and filament wetting means are provided which operate throughout the relative motion of the mandrel and carriage for applying a hardenable material in its liquid phase to paid out filaments. The traverse-feed means may be arranged to reverse the direction of the traverse at the completion of each traverse, and may retain or change the gear ratio for the reverse direction. The feed means may also be arranged to vary the gear ratio after a given number of traverses. The drive of the machine may be so arranged that it is shut down after a given number of revolutions of the mandrel, or after the filaments have been wound to provide a bearing of the required thickness. The apparatus may be used to wind the mandrel 22 first with a plurality of low-friction filaments and filaments of a resin-bondable fibrous material to form the low-friction liner 11, and then to wind over this liner 11 a plurality of strands of reinforcing material 25. The liner 11 and the reinforcing material 25 are then united with a hardenable bonding resin and the resulting product is cured and cut up into bearings.